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Regional multi-microgrid power distribution network interaction method by considering wind power consumption

A wind power consumption and multi-microgrid technology, applied in the field of microgrids, can solve problems such as lack of consideration of interaction relationships, achieve the effects of reducing energy interaction, improving wind power utilization, and reducing total costs

Inactive Publication Date: 2020-02-21
STATE GRID SICHUAN ECONOMIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a regional multi-microgrid distribution network interaction method considering wind power consumption, so as to solve the problem of lack of consideration of the interaction relationship between microgrids and distribution networks in the prior art, and realize the coordination of each microgrid. The grid shifts the load in line with the overall situation of the system, assists the distribution network in "shaving peaks and filling valleys", improves the utilization rate of wind power inside the micro-grid, reduces the total cost of electricity consumption of the micro-grid group, eases the operating pressure of the distribution network, and realizes regional The purpose of friendly interaction between multi-microgrid system and distribution network

Method used

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  • Regional multi-microgrid power distribution network interaction method by considering wind power consumption
  • Regional multi-microgrid power distribution network interaction method by considering wind power consumption
  • Regional multi-microgrid power distribution network interaction method by considering wind power consumption

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Experimental program
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Effect test

Embodiment 1

[0059] A regional multi-microgrid distribution network interaction method considering wind power consumption, including:

[0060] S1. Establish a multi-objective optimization model for regional multi-microgrid-distribution network energy transactions. The multi-objective optimization model minimizes the total cost of multi-microgrid power consumption while maximizing the income of regional multi-microgrid operators;

[0061] S2. Use the peak-valley electricity price user response model to simulate the electricity price response degree of each microgrid;

[0062] S3. Using random variable α n,t Describe the uncertainty of fan output and introduce an adjustable parameter β n,t Guarantee the economy of the electricity price scheme;

[0063] S4. Constrain the system power balance, energy storage power and SOC state.

[0064] The solution methods of the multi-objective optimization model include:

[0065] S101. Randomly generate the initial parent population P t , the total nu...

Embodiment 2

[0087] On the basis of Embodiment 1, the regional multi-microgrid system in this embodiment is composed of 5 microgrids, and the distributed wind power installed capacity inside each microgrid is shown in Table 1. The adjustable parameter β, which characterizes the uncertainty of renewable energy output in the dispatch period, takes 10%.

[0088] The various electricity prices are shown in Table 2:

[0089] Table 1 Microgrid wind power installed capacity

[0090]

[0091] Table 2 Electricity Price

[0092]

[0093]In Table 2, the external power grid sales price is the price for the regional multi-microgrid system operator to purchase electricity from the distribution network; the operating entity's electricity purchase price is the price for the regional microgrid operator to purchase electricity from each microgrid in the region. When multiple microgrids operate independently (that is, multiple microgrids are connected to the distribution network separately, but the m...

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Abstract

The invention discloses a regional multi-microgrid power distribution network interaction method by considering wind power consumption. The method comprises the steps of: establishing a regional multi-microgrid-power distribution network energy transaction multi-objective optimization model, and minimizing the total power consumption cost of multiple microgrids while maximizing the profit of a regional multi-microgrid operation main body by adopting the multi-objective optimization model; adopting a peak-valley electricity price user response model to simulate the electricity price response degree of each microgrid; adopting a random variables [alpha]n and t to describe the uncertainty of fan output, and introducing adjustable parameters [beta]n and t to ensure the economy of an electricity price scheme; and constraining the system power balance, the energy storage power and an SOC state. The method is used for solving the problem that an interaction relationship between the microgridsand the power distribution network is not considered in the prior art, achieves that the multiple microgrids are coordinated to perform load translation of the whole situation meeting the system, assist the power distribution network in peak clipping and valley filling, improves the wind power utilization rate in the microgrids, reduces the total power utilization cost of the microgrid group, relieves the operation pressure of the power distribution network and achieves the purpose of good interaction between a regional multi-micro-grid system and power distribution network friends.

Description

technical field [0001] The invention relates to the field of microgrids, in particular to a regional multi-microgrid distribution network interaction method considering wind power consumption. Background technique [0002] As energy demand continues to increase and environmental issues become increasingly prominent, the penetration rate of distributed wind power in the power system continues to increase. Through the effective coordination of distributed wind power, energy storage and load, the microgrid can promote the large-scale and efficient utilization of distributed wind power, and is conducive to the research of new production and consumption models. It is one of the effective technical means to promote wind power consumption and solve the energy crisis. . With the increasing number of microgrids connected to the distribution network in a certain area, how to integrate and aggregate multiple microgrids that are geographically close to promote the nearby consumption an...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/38H02J3/32H02J3/48
CPCH02J3/008H02J3/32H02J3/48Y02E10/76Y02E70/30
Inventor 王晞任志超陈礼频陈博邓盈盈程超王海燕徐浩
Owner STATE GRID SICHUAN ECONOMIC RES INST
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